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3232haberoceanhttps://feedburner.google.comVoltage regulator module using 7805http://www.haberocean.com/2018/10/voltage-regulator-module-using-7805/
http://www.haberocean.com/2018/10/voltage-regulator-module-using-7805/#respondSun, 14 Oct 2018 05:07:04 +0000http://www.haberocean.com/?p=3099Most of the TTL ICs are working on 5V. Many methods are there to design a 5V stabilizer circuit. Here, we are introducing a simple DIY board by which even the starters could easily design a 5V regulated voltage supply.

Components required

Printed Circuit Board – 1

7805 voltage regulator IC – 1

Screw terminal 5mm – 2

0.33 micro Farad capacitor –

]]>Most of the TTL ICs are working on 5V. Many methods are there to design a 5V stabilizer circuit. Here, we are introducing a simple DIY board by which even the starters could easily design a 5V regulated voltage supply.

Components required

Printed Circuit Board – 1

7805 voltage regulator IC – 1

Screw terminal 5mm – 2

0.33 micro Farad capacitor – 1

0.1 micro Farad capacitor – 1

Circuit is done as shown in the following diagram. By replacing 7805 by 7808, we could make 8V regulator module.

]]>http://www.haberocean.com/2018/10/voltage-regulator-module-using-7805/feed/0LED flasher / Astable multivibrator module using 555 timer IChttp://www.haberocean.com/2018/10/led-flasher-astable-multivibrator-module-using-555-timer-ic/
http://www.haberocean.com/2018/10/led-flasher-astable-multivibrator-module-using-555-timer-ic/#respondMon, 08 Oct 2018 04:06:40 +0000http://www.haberocean.com/?p=3043A simple module based on 555 timer IC, which will help you to make an LED flasher / Astable multivibrator easily.

Package includes :

PCB

555 timer IC

C1 – 10 Micro Farad

0.01 Micro Farad capacitor

R1 – 10K

1K resistor

POT 2 – 1 Mega Ohm

LED

Assemble the circuit as shown below.

]]>A simple module based on 555 timer IC, which will help you to make an LED flasher / Astable multivibrator easily.

Package includes :

PCB

555 timer IC

C1 – 10 Micro Farad

0.01 Micro Farad capacitor

R1 – 10K

1K resistor

POT 2 – 1 Mega Ohm

LED

Assemble the circuit as shown below. Leave POT1 and R2 unconnected. POT1 is parallel to R1 and POT2 is parallel to R2. Only one from each set need to be connected. R1 is 10K.

Circuit diagram of LED flasher / Astable multivibrator is given below.

Detailed explanation of the circuit, calculation and timing diagram is given here. It is better to provide the voltage supply from a stabilized voltage source. Purchase the following two DIY modules to create a 555 based astable multivibrator from a stabilized voltage source.

This module will help you to make LED flashers of different speeds by varying the value of R1, R2 and C1. Leave POT1 and R2 unconnected. POT1 is parallel to R1 and POT2 is parallel to R2. Only one from each set need to be connected. R1 is 10K. This module can be used for generating clock pulses for Johnson counters, ring counters. digital clocks etc.

PCB only package of LED flasher / Astable multivibrator module. Assemble the components as shown in the images. Power the module from a stabilized voltage source. Vary the value of POT2 to change the speed of LED blinking.

“Assemble It Yourself” package of LED flasher / Astable multivibrator module. Package includes all the components to complete the module. Assemble the components as shown in the image. Package includes

After completing the circuit, vary the potentiometer to change the ON time and OFF time of output waveform. Speed of LED blinking will vary with the value of potentiometer. Now, connect the output terminals of LED flasher / Astable multivibrator DIY board to Digital Storage Oscilloscope to see the output in real time.

7-Segment displays are always interesting to electronic beginners. Various methods are there to interface 7-segment displays in circuits. 7-Segment displays are of two types.

Common anode 7-segment display

Common cathode 7-segment display

74LS47 is a BCD to 7-segment decoder/driver which can be used to interface common anode 7-segment displays in circuits. Here, we will see a module using 74LS47 by which we can make a 0-9 counter in few simple steps.

]]>Introduction

7-Segment displays are always interesting to electronic beginners. Various methods are there to interface 7-segment displays in circuits. 7-Segment displays are of two types.

Common anode 7-segment display

Common cathode 7-segment display

74LS47 is a BCD to 7-segment decoder/driver which can be used to interface common anode 7-segment displays in circuits. Here, we will see a module using 74LS47 by which we can make a 0-9 counter in few simple steps.

Purchase the modules from following link.

Circuit diagram is given below.Qa, Qb, Qc and Qd are the inputs to 74LS47 as marked in PCB. Watch the video demonstration of working of “Single digit seven segment display module using 74LS47”.

Working

Step 1 : Power the BCD Counter module from a 5V regulator as shown in the following image. Press and release the switch. Counter will increment the count in each press and release. Count will be in Binary Coded Decimal (BCD) form which can be read from LEDs.

Step 2 : Clock signals for BCD counter circuit is generated from an astable multivibrator module. BCD counter will increment the count in each clock pulse generated from the Astable multivibrator module. Speed of counting can be varied by changing the value of POT. This counter will count from 0 to 9.

Step 3 : Here, we will include some add-ons in the circuit to count from 00 to 99. Only thing to do is to put a second BCD counter module as shown in the following image.

Similarly adding a third BCD module, we could easily count from 000 to 999.

Assemble the circuit as shown below. Leave POT1 and R2 unconnected. POT1 is parallel to R1 and POT2 is parallel to R2. Only one from each set need to be connected.

]]>Package includes :

PCB

555 timer IC

10 Micro Farad capacitor

0.01 Micro Farad capacitor

10K resistor

1K resistor

1M POT

LED

Assemble the circuit as shown below. Leave POT1 and R2 unconnected. POT1 is parallel to R1 and POT2 is parallel to R2. Only one from each set need to be connected.

Circuit diagram of astable multivibrator using 555 timer is given below.

Detailed explanation of the circuit, calculation and timing diagram is given here. It is better to provide the voltage supply from a stabilized voltage source. Purchase the following two DIY modules to create a 555 based astable multivibrator from a stabilized voltage source.

After completing the circuit, vary the potentiometer to change the ON time and OFF time of output waveform. Speed of LED blinking will vary with the value of potentiometer. Now, connect the output terminals of astable multivibrator DIY board to Digital Storage Oscilloscope to see the output in real time.

Watch the following video to get the complete demonstration.

]]>http://www.haberocean.com/2018/07/astable-multivibrator-using-555/feed/0Voltage Regulator using 7805. Circuit and explanation.http://www.haberocean.com/2018/07/how-to-make-a-simple-5v-voltage-regulator/
http://www.haberocean.com/2018/07/how-to-make-a-simple-5v-voltage-regulator/#respondThu, 19 Jul 2018 19:53:49 +0000http://www.haberocean.com/?p=24Most of the TTL ICs are working on 5V. Many methods are there to design a 5V stabilizer circuit. Here, we are introducing a simple DIY board by which even the starters could easily design a 5V regulated voltage supply.

Components required

Printed Circuit Board – 1

7805 voltage regulator IC – 1

Screw terminal 5mm – 2

0.33 micro Farad capacitor –

]]>Most of the TTL ICs are working on 5V. Many methods are there to design a 5V stabilizer circuit. Here, we are introducing a simple DIY board by which even the starters could easily design a 5V regulated voltage supply.